W5L1 - Metabolism II Flashcards
What is broken down in glycolysis
Glucose (6C) broken down into 2 pyruvate (3C)
Where does glycolysis occur?
In the cytosol
Explain the four step process in cellular respiration
Glycolysis > Pyruvate Oxidation > TCA Cycle > Oxidative Phosphorylation
What enzyme catalyses redox reactions in Glycolysis, Pyruvate Oxidation and TCA
dehydrogenases
How much ATP is produced in Glycolysis
4 ATP produced in Energy Payoff Phase - 2 ATP used in Energy Investment Phase
What is the byproduct of Glycolysis
2 Pyruvate, 2H2O, 2 ATP, 2NADH, 2H+
What is the enzyme that is produced when glucose gets converted into Glucose 6-Phosphate
hexokinase
What is the enzyme that splits fructose 1,6-biphosphate
Aldolase
Why does G3P turn into 1,3-biphosphoglycerate
oxidation reaction > H+ removed from G3P > therefore 2NAD+ + 2H+ -> 2NADH reaction can occur and since one H molecule missing phosphate goes an attaches itself to G3P
Which is the enzyme in glycolysis that causes a double bond to form
Enolase > forms 2H2O as a byproduct.
Where does pyruvate oxidation reaction occur?
Mitochondria
When acetyl CoA goes into TCA cycle what are the byproducts?
1 ATP, 4 NADH, 1FADH2, 3CO2
What is fermentation
- Reactions of glycolysis plus additional reaction/s
What is an additional reaction in fermentation that does not occur in aerobic processes
The additional reactions reoxidises the NADH to NAD+ for reuse in glycolysis
How much ATP is produced per glucose molecule in the whole cellular resp process
30-2 ATP
Where does fermentation occur
Cytosol
What is feedback inhibition
Regulation of metabolic processes > end product deactivates the enzyme that catalyses the start
